4 inch drain TD442B-DR-PEX (46.0% eff) factory installed crimp PEX fittings type ASTM F1807

This is a 4" inner diameter drain water heat recovery unit. 
DO NOT PURCHASE THIS ITEM IF YOU ARE NOT SURE WHAT THE INNER DIAMETER OF YOUR DRAIN PIPE IS. Please check with a professional before purchasing. 

IMPORTANT PRICE INFORMATION: Our 42" model stands out in the market, not just for its size, but for its unparalleled efficiency, boasting a remarkable 46% efficiency rate compared to the standard 43.7%. This superior performance is directly reflected in our pricing.  It's essential to understand that with this purchase, you're investing in top-tier efficiency, not merely dimensions.

Elevate your shopping experience with the Thermodrain product, now available on our Shopify store. Here’s why it's a must-have:

TD442B-DR-PEX  Specifications:

• Free Shipping Eligibility: Check at checkout to see if your order qualifies for free shipping.
• Easy Installation: No need for soldering, thanks to factory-installed crimp PEX fittings. Certified to CSA B137.5 and ASTM F1807 standards.
• Flexible Installation Options: Install it horizontally for space efficiency, though keep in mind efficiency is slightly reduced.
• Optimized Efficiency: Achieves 46.0% efficiency at a flow rate of 9.5 L/min (2.5 GPM) when installed vertically.
• 4" Inner Drain dia. : Features a 4-inch inner drain diameter and a length of 42.0 inches.
• Powerful Heat Recovery: Offers 8.3 kW of heat recovery to enhance your system's efficiency.
• Lightweight Design: Weighs in at 37 lbs, making it manageable for installation.
• Convenient Features: Comes equipped with 2 drain couplings for easy integration into your plumbing system.
• Proven Efficiency: Efficiency is verified to CSA B55.1 standards, ensuring top performance.
• Safety Assurance: Certified to CSA B55.2 for your peace of mind and safety.

Discover the perfect blend of efficiency, convenience, and safety with the Thermodrain product. Add it to your cart today!